Event coordinator Linda Massey, of the Friends of Boston Manor, said the day was about reclaiming the area's open spaces and showing solidarity with Alice's family.

"We were all so saddened by the incomprehensible outcome [of the search for Alice]," she said.

"With our involvement in the local community we have regularly been asked how we could bring the community together to not only reclaim our open spaces after the dark days but also to give strength to the family.

"It is felt that the time is now right and with full support from the family, various activities have and will be taking place in Boston Manor Park."

This Friday (June 5), 14 black poplar trees - one for each year of Alice's life - will be planted in her memory at the park from midday.

A music tent at this year's Hanwell Carnival, on Saturday June 20, has already been dedicated to the schoolgirl's memory. Alice's Acoustic Tent will feature young, local musicians, and acts who have performed there in the past.

The acts lined up to appear at Boston Manor Park on Sunday are:

Jai Blue - acoustic/folk pop

Jai Blue is a 15-year-old singer/songwriter from Ealing who is passionate about writing, art and music. She wrote her first song aged 13, called No Quitter, which was about her own personal experience of not giving up. She hasn't stopped writing since. Jai has performed in and around west London and hopes to inspire others through her lyrics. She has recently started a Youtube channel Jai Blue which contains original material.

Stacey Pierre - R&B/pop

Stacey is a vocalist guitarist who is currently studying BA popular music at the University of Northampton. She is a former student of Forecast Academy and has performed at various open mic nights over the past year. More recently Stacey shot a music video for the soon to be released short film Star Cross.

Misinterpret - funk

Misinterpret is made up of students aged between 14 and 17. They all knew Alice very well and some had been good friends with her since primary school. The band have been together for less than six months and came second in the battle of the bands competition. With a number of gigs lined up for the summer they are really enjoying playing music together.

Havana Good Time - Cuban and salsa

This lively band is made up of dedicated amateurs and can consist of anything from eight people to 25. They regularly get commissioned to perform at gigs around the west London area and, without hesitation, agreed to support the Celebrating Alice event.

The Great West Groove - semi acoustic blues

The Great West Groove are a roots/blues trio of professional musicians playing with a number of artists all over the UK. They have been playing together for the past five years. Brentford/Hanwell-based they are going to be playing at the Brewery Tap, Brentford, as a fringe event to the Brentford Festival on Saturday September 5.

Kate De Freitas and the Babacools - swing jazz funk

Kate is a professional singer and actress who lives in Brentford and heads a very talented group of musicians promising to bring much enjoyment to the Celebrating Alice event. They are a lively, funny, quirky, hugely energetic jazz funk band. They take well-known songs and give them a new twist. They like their audiences to dance, laugh and have a great time!

Alex & Collette - indie-rock

Alex, 16, and 15-year-old Collette attend Elthorne Park High School, Hanwell, and have been performing together for approximately two years. They are looking forward to performing at the Celebrating Alice concert.